It is definitely a problem in the gauges. I am on my third one and even it acts up radomly. I am awaiting a reply from Vento USA now. I am thinking about installing the cluster from a regular Triton r4i as my tach is going crazy mostly and I can live without the tack but not the speedometer. They should replace it under warranty. I have heard of a lot of folks having this problem but I seem to be the only one that new ones keep failing. Otherwise a great scooter. Good luck.